Feeling sick after working out?

Hello all, I have a question. Every time I do any type of core workout I feel like I'm going to be physically sick afterwards and end up having to lay down for an hour or so to calm my stomach. I was just wondering if this is normal or if there's something I'm doing wrong? I would really like to continue working out in order to lose weight, but if I keep feeling so sick afterwards then I don't think I'll be able to. Any advice on what I can do to remedy this is greatly appreciated.

From what little I know it will be one of two things. Exercising lowers your blood pressure, also sweating and so losing fluid also drops your blood pressure. Vigorous exercise also drops your blood sugar which can take time to recover Either of (or combination) of these things will make you feel nauseous and dizzy. The fact that lying down afterwards suggests it's your blood pressure. Make sure you are well hydrated before during and after each session even if you don't feel like drinking force yourself to. As your fitness improves this should ease as your body adapts. I'm...

This happens to me a lot, I drink a lot of water and eat enough, I'm type 1 diabetic but my blood sugar will be fine and I'll still get nauseous. I usually just have to wait a while then work out a second time later in the day.